In this comprehensive review, recent progress and developments on perfluorinated sulfonic-
acid (PFSA) membranes have been summarized on many key topics. Although quite well …

Nafion ionomers were developed and are produced by the EI DuPont Company. These
materials are generated by copolymerization of a perfluorinated vinyl ether comonomer with …

This paper is a survey of the studies made in recent years on perfluorinated membranes,
structure properties and applications. The properties and structure of these membranes …

Manning's counterion condensation theory, originally developed for polyelectrolyte
solutions, was used to predict ion activity coefficients in charged (ie, ion exchange) …

▪ Abstract The need to operate polymer electrolyte membrane (PEM) fuel cells at
temperatures above 100° C, where the amount of water in the membrane is restricted, has …

The conductance of Nafion membranes was investigated by means of impedance
spectroscopy as a function of temperature and of sample treatment. In addition to other …

Despite their increasing importance in many energy and water purification applications, few
systematic studies of ion sorption in ion exchange membranes exist where fixed charge …

Self-humidification behaviors of polymer electrolyte membranes (PEMs) were clarified
experimentally in polymer electrolyte fuel cells (PEFCs) operated with dry H2 and O2. New …

Successful and rapid startup of proton exchange membrane fuel cells (PEMFCs) at
subfreezing temperatures (also called cold start) is of great importance for their …

The proton conductance of Nafion 117 was measured as a function of water content and
temperature and compared to changes in the phase state of water. Conductance was …